Question about Heating & Cooling
Listen to see if the contactors make a clicking noise when the fan starts to studder. If not, then it's not the signal to the contactors. If a clicking sound of the contactors can be heard, then the problem is the contactor coil dropping in and out. This could be a lose wire coming from the processor board, or a problem with the board itself. If no clicking is heard and the contactor is definitely not making and breaking the connection, then the problem could be a lose wire feeding power to the motor. This can be traced all the way back to where the power comes into the unit.
Posted on Sep 19, 2008
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Posted on Jan 02, 2017
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